component
ESP32-C3-MINI-1U-N4
Public Made by Adomby adom
Espressif Systems WiFi Modules, ESP32-C3-MINI-1U. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "esp32-c3-mini-1u-n4",
"version": "0.1.0",
"type": "component",
"description": "Espressif Systems WiFi Modules, ESP32-C3-MINI-1U. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"iot-communication modules",
"esp32-c3-mini-1u-n4",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"esp32-c3-mini-1u-n4.kicad_sym",
"esp32-c3-mini-1u-n4.kicad_mod",
"esp32-c3-mini-1u-n4.glb",
"esp32-c3-mini-1u-n4.step",
"esp32-c3-mini-1u-n4.lbr",
"docs/hero.png",
"docs/esp32-c3-mini-1u-n4-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"esp32-c3-mini-1u-n4-hero.glb",
"esp32-c3-mini-1u-n4-hero.overlay.json",
"esp32-c3-mini-1u-n4-etched.glb"
],
"component": {
"mpn": "ESP32-C3-MINI-1U-N4",
"manufacturer": "Espressif Systems",
"package": "ESP32-C3-MINI-1U",
"pin_count": 53,
"category": "IoT/Communication Modules",
"subcategory": "WiFi Modules",
"datasheet": "https://www.espressif.com/sites/default/files/documentation/esp32-c3-mini-1_datasheet_en.pdf",
"parts": {
"symbol": "esp32-c3-mini-1u-n4.kicad_sym",
"footprint": "esp32-c3-mini-1u-n4.kicad_mod",
"model_3d": "esp32-c3-mini-1u-n4-hero.glb",
"model_3d_plain": "esp32-c3-mini-1u-n4-etched.glb",
"model_3d_step": "esp32-c3-mini-1u-n4-etched.step",
"model_3d_step_plain": "esp32-c3-mini-1u-n4.step",
"lbr": "esp32-c3-mini-1u-n4.lbr"
},
"distributor_links": {
"lcsc": "C2911374",
"digikey": "1965-ESP32-C3-MINI-1U-N4TR-ND",
"mouser": "356-ESP32-C3MINI1UN4"
},
"distributor_check": {
"checked_at": "2026-10-28T17:44:32Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "1965-ESP32-C3-MINI-1U-N4TR-ND",
"status": "found"
},
"mouser": {
"pn": "356-ESP32-C3MINI1UN4",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "2",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "3",
"name": "3V3",
"type": "power_in",
"description": "Power supply pin; the module supply VDD33 is specified at 3.0 V to 3.6 V (3.3 V typical) with an absolute maximum of 3.6 V."
},
{
"number": "4",
"name": "NC",
"type": "unconnected",
"description": "Not connected; no function is assigned to this pin on the module."
},
{
"number": "5",
"name": "IO2",
"type": "bidirectional",
"description": "GPIO2 with ADC1_CH2 and FSPIQ functions; it is a chip boot-mode strapping pin and is floating by default at reset."
},
{
"number": "6",
"name": "IO3",
"type": "bidirectional",
"description": "GPIO3 with ADC1_CH3 function."
},
{
"number": "7",
"name": "NC",
"type": "unconnected",
"description": "Not connected; no function is assigned to this pin on the module."
},
{
"number": "8",
"name": "EN",
"type": "input",
"description": "High enables the chip and low powers it off; the pin must not be left floating."
},
{
"number": "9",
"name": "NC",
"type": "unconnected",
"description": "Not connected; no function is assigned to this pin on the module."
},
{
"number": "10",
"name": "NC",
"type": "unconnected",
"description": "Not connected; no function is assigned to this pin on the module."
},
{
"number": "11",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "12",
"name": "IO0",
"type": "bidirectional",
"description": "GPIO0 with ADC1_CH0 and XTAL_32K_P functions."
},
{
"number": "13",
"name": "IO1",
"type": "bidirectional",
"description": "GPIO1 with ADC1_CH1 and XTAL_32K_N functions."
},
{
"number": "14",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "15",
"name": "NC",
"type": "unconnected",
"description": "Not connected; no function is assigned to this pin on the module."
},
{
"number": "16",
"name": "IO10",
"type": "bidirectional",
"description": "GPIO10 with FSPICS0 function."
},
{
"number": "17",
"name": "NC",
"type": "unconnected",
"description": "Not connected; no function is assigned to this pin on the module."
},
{
"number": "18",
"name": "IO4",
"type": "bidirectional",
"description": "GPIO4 with ADC1_CH4, FSPIHD and MTMS functions."
},
{
"number": "19",
"name": "IO5",
"type": "bidirectional",
"description": "GPIO5 with ADC2_CH0, FSPIWP and MTDI functions."
},
{
"number": "20",
"name": "IO6",
"type": "bidirectional",
"description": "GPIO6 with FSPICLK and MTCK functions."
},
{
"number": "21",
"name": "IO7",
"type": "bidirectional",
"description": "GPIO7 with FSPID and MTDO functions."
},
{
"number": "22",
"name": "IO8",
"type": "bidirectional",
"description": "GPIO8; it is a strapping pin used for chip boot mode and ROM message printing control, and is floating by default at reset."
},
{
"number": "23",
"name": "IO9",
"type": "bidirectional",
"description": "GPIO9; it is a chip boot-mode strapping pin with a weak pull-up by default (bit value 1)."
},
{
"number": "24",
"name": "NC",
"type": "unconnected",
"description": "Not connected; no function is assigned to this pin on the module."
},
{
"number": "25",
"name": "NC",
"type": "unconnected",
"description": "Not connected; no function is assigned to this pin on the module."
},
{
"number": "26",
"name": "IO18",
"type": "bidirectional",
"description": "GPIO18 with USB_D- function."
},
{
"number": "27",
"name": "IO19",
"type": "bidirectional",
"description": "GPIO19 with USB_D+ function."
},
{
"number": "28",
"name": "NC",
"type": "unconnected",
"description": "Not connected; no function is assigned to this pin on the module."
},
{
"number": "29",
"name": "NC",
"type": "unconnected",
"description": "Not connected; no function is assigned to this pin on the module."
},
{
"number": "30",
"name": "RXD0",
"type": "bidirectional",
"description": "GPIO20 with U0RXD function (UART0 receive)."
},
{
"number": "31",
"name": "TXD0",
"type": "bidirectional",
"description": "GPIO21 with U0TXD function (UART0 transmit)."
},
{
"number": "32",
"name": "NC",
"type": "unconnected",
"description": "Not connected; no function is assigned to this pin on the module."
},
{
"number": "33",
"name": "NC",
"type": "unconnected",
"description": "Not connected; no function is assigned to this pin on the module."
},
{
"number": "34",
"name": "NC",
"type": "unconnected",
"description": "Not connected; no function is assigned to this pin on the module."
},
{
"number": "35",
"name": "NC",
"type": "unconnected",
"description": "Not connected; no function is assigned to this pin on the module."
},
{
"number": "36",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "37",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "38",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "39",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "40",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "41",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "42",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "43",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "44",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "45",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "46",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "47",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "48",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "49",
"name": "GND",
"type": "power_in",
"description": "Ground pin; this is the exposed EPAD, and soldering it to the base-board ground is optional but improves thermal performance."
},
{
"number": "50",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "51",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "52",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "53",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-haiku-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The MPN ESP32-C3-MINI-1U-N4 is listed as NRND (not recommended for new designs) in Table 1-2; the da; The Table 1-2 row for N4 shares the 13.2 x 12.5 x 2.4 mm embedded size with the other MINI-1U varian; Pin 49 is listed as GND in Table 3-1 but labelled EPAD in the schematic (Figure 9-1); it is recorded"
],
"pages_sent": 23,
"cost_usd": 0.0751,
"at": "2026-10-28T17:43:53"
},
"datasheet": {
"url": "https://www.espressif.com/sites/default/files/documentation/esp32-c3-mini-1_datasheet_en.pdf",
"pages": 48,
"sha256": "de7361381348d82a",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 53,
"described": 53,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "esp32-c3-mini-1u-n4.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
13.2,
12.5,
2.4
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.65,
"footprint_binding": "identity",
"sha256": "1f2430a0eb81fce6e2c505160e1c3aaf92008218bfedb3a29d730fb1873f8bf8",
"checked": "2026-10-28",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "esp32-c3-mini-1u-n4-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
13.2,
12.5,
2.4
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.65,
"footprint_binding": "identity",
"sha256": "fc3af2f2a0a10fb06a3bd9085b80d648dce3536b38a5616c9540c0ac1e0204fb",
"checked": "2026-10-28",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}